CN103203725A - Object stage with accurately-controlled position - Google Patents
Object stage with accurately-controlled position Download PDFInfo
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- CN103203725A CN103203725A CN2012100068556A CN201210006855A CN103203725A CN 103203725 A CN103203725 A CN 103203725A CN 2012100068556 A CN2012100068556 A CN 2012100068556A CN 201210006855 A CN201210006855 A CN 201210006855A CN 103203725 A CN103203725 A CN 103203725A
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Abstract
The invention relates to an object stage with an accurately-controlled position, which is mainly used for solving the problem that an object stage cannot be accurately positioned in the prior art. The object stage with an accurately-controlled position comprises support columns, pins, a base and plungers, wherein the support columns and the pins are fixed on the base; the pins which are vertical to the base are higher than the support columns; a plane is formed by the apexes of support positions on the support columns; the support positions of the support columns have curved structures or conical structures; and supported objects are arranged at the support positions of the support columns, and are positioned on the inner sides of the pins and the plungers. According to the object stage, the problem is well solved; and the object stage can be applied to industrial production of precisely-operated object stages.
Description
Technical field
The present invention relates to a kind of objective table of accurate control position.
Background technology
Along with the development of society, every profession and trade is more and more higher to the requirement of the placement environment of the hardware facility that relates in its industry and plummer, particularly to the placement of some precision instruments.For example, at the operating desk that relates to optical element work, often require its support platform to have enough smoothnesses.
Chinese patent CN101738127A discloses a kind of adiabatic supporting device, comprise cold of having a plurality of installing holes on it and be used for supporting described cold support bar, described support bar comprises the top support bar again, presses down support bar, cooperate with described installing hole with a contact or the line way of contact respectively, but the bracing frame of this invention has four support columns.
Chinese patent CN2574502 discloses a kind of supported at three point balance table, it comprises the support section of plummer and support bearing platform, table top three fulcrums of support section are by a vertically direct support column, two indirectly vertical support columns that are connected on the oblique brace summer provide, the other end of two oblique brace summers is fixed on the same point of direct vertically support column, and three support columns of this invention are supporting desktop simultaneously not.
Chinese patent CN201468443U desktop bracing frame, it is characterized in that: the desktop bracing frame is provided with underframe, the quarter butt of triangular support pin is connected with underframe, side lever is provided with the brace of band connecting hole in each triangular support pin, fixture passes connecting hole each triangular support pin is fixed, the upper corners of three triangular support pin is in same plane, and forms the desktop supporting surface, but support column is that face contacts with desktop.
But CN102102986A the present invention relates to a kind of aligning and transfers the circularity/cylindricity measurement workbench that inclines, and comprises the pedestal that is connected with line shaft, operating platform, three bracing frames that are used for placing measured workpiece; Wherein bracing frame comprises two flexible bracing frames and a fixing support rack, and the upper end of flexible bracing frame contacts with the operating platform sphere, and the fixing support rack upper end links to each other with operating platform by the Hooke's hinge assembly, but support column is that sphere contacts with table top.
3 have the effect of determining a plane, the bracing frame that adopts three support columns to constitute has the function that supported objects is fixed on a certain plane, but there is following problem in supported at three point: near supported object center of gravity drops on the leg-of-mutton edge that three strong points constitute or departed from the triangle interior zone, supported object is turned on one's side easily, thereby caused the object accidental injury, even can cause security incident.
Bracing frame and the support platform of prior art report all are the operating desk of face contact type, all can't guarantee the enough smooth of its face, and in different operating process, the plan-position reappearance that object is placed on the operating desk is bad, is unfavorable for accurate operation.Particularly in the measuring process at some precision instrument, the position difference of measured object has very big influence to final actual result in the operation of some instruments.The invention provides a kind of objective table of accurate control position, it can accurately be fixed on supported object on a certain position.
Summary of the invention
Technical problem to be solved by this invention is that objective table is difficult for pinpoint problem in the prior art, and a kind of objective table of accurate control position newly is provided, the advantage that this loading stand has supporting ﹠ stablizing, accurately locatees.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of objective table of accurate control position, comprise base station, support column, plunger and pin, support column, plunger and pin are fixed on the base station, perpendicular to the height of pin and plunger on the direction of the base station height greater than support column, the summit of the support zone of described support column forms a plane, and contained object is positioned on the support zone of support column, and its edge contacts with pin, plunger; At least one plunger is positioned at the relative position of pin.
In the technique scheme, optimized technical scheme is that the support zone of described support column is curved-surface structure or pyramidal structure; Described objective table has at least 3 hard spot support columns, and described objective table has at least 2 pins.Optimized technical scheme is that support column is made of 3 hard spot support columns and a plurality of soft spots support column; 3 pins are arranged on the base station; Optimized technical scheme is that objective table contains three hard spot support columns, a soft spots support column, and three hard spot support columns are distributed in base station position loca and constitute a triangle, and soft spots support column loca is in described leg-of-mutton perimeter; Optimized technical scheme is three hard spot support column position loca line form right angles or acute triangle, and the support zone curved-surface structure of described support column is spherical structure.Optimized technical scheme is that three support column position loca lines constitute isosceles right angle or isosceles acute triangle; Described support column and base station contacting structure are cylinder, rectangular strip or helicitic texture, and described three hard spot support columns and pin are made by hard material, and the soft spots support column is made of flexible material.Optimized technical scheme is that described three hard spot support columns are made by the abrasion-proof stainless steel material; The soft spots support column is combined by hard material and flexible material and forms; The main body of described hard spot support column is rectangular structure; Described hard spot support column screws mode by welding or screw thread and is fixed on the base station, and threads turn is passed through at the position that the soft spots support column contacts with base station.Optimized technical scheme is that base station is made of hard material; Standby screw is arranged on the base station, have nut on the hard spot support column, the soft spots support column is the bulb resilient plunger, and the support zone of described support column contacts or the line contact for point with the way of contact of table top.Optimized technical scheme is that base station is made by lightweight aluminium material or alloy material; The support zone of described support column is that point contacts with the way of contact of table top.
Described hard spot support column screws mode by welding or screw thread and is fixed on the base station, and threads turn is passed through at the position that the soft spots support column contacts with base station.Described hard spot support column is to be fixed on the base station by the mode that screw thread screws.Have a plurality of standby screws on the base station, base station is made of hard material.Described base station can be Any shape, and as preferably, it is generally more regular shape.
The agent structure of the described soft spots support column of optimized technical scheme can be identical with the structure of hard spot support column, also can be different, its purpose is to provide certain support force to supported object in a certain orientation, place supported object rollover, as preferably, it has following several middle structure: the soft spots support column all is made of flexible material, and threads turn can be passed through in its position that contacts with base station, both can be so that the soft spots support column had carried out certain movement in vertical direction; The soft spots support column is combined by hard material and flexible material and forms, and wherein hard material distortion is little, can reduce single flexible material perpendicular to the movement on the direction of support column; Soft spots can also be made of hard material entirely, and for example, it can be the bulb resilient plunger.
The described support column of optimized technical scheme is to be fixed on the base station by the mode that screw thread screws, and has a plurality of standby screws at base station, in order to change the position of support column, thereby makes bracing frame adapt to the support of different size object.Optimized technical scheme, the base station of described fixed support post is made of hard material, can be made by lightweight aluminium material or alloy material as preferred its.
Optimized technical scheme, described objective table can will be fixed on a certain plane by object carrier, and described pin has regulating action, and can will accurately be fixed in the effect of a certain definite position on the plane by article carrying piece.Optimized technical scheme, described pin are 3.Optimized technical scheme, described pin with regulating action is cam pin, and it has the effect of adjusting, and it can carry out certain fine setting in the plan-position with object, thereby object is determined on a certain in the plane definite position.
Optimized technical scheme, described have the cam pin of regulating action for adjustable continuously, and it can realize the fixing of eccentric shaft by related measure after each the adjusting, no longer loosening after namely can making eccentric shaft locate, as preferably, the main body of described eccentric shaft is cylindrical structure, and its locking measure can be that screw is fixed.Optimized technical scheme, described objective table can be any structure shape, as preferably, has the support column that several can regulate height on the described objective table, the top of support column is as the strong point, as preferably, support column is made of 3 hard spot support columns or is made of 3 hard spot support columns and several soft spots support columns.Optimized technical scheme, described pin is by manual adjustments, has on the pin for the mechanism that regulates; The manual adjustments parts are projection, groove or circular hole.Has nut on the pin.The main body of the eccentric shaft of described eccentric pin is that the stiff end that cylindrical structure and base station match has screw thread, and during the rotating eccentricity pin, its vertical central is laterally mobile.
Optimized technical scheme, described plunger are at least 1, and itself and described pin constitute by the marginal branch support point of object carrier, preferred technical scheme, and described plunger is 2, its position with described pin is relative.Optimized technical scheme, further, described plunger is spring-loaded plunger, as preferably, the strong point of plunger is bulb.
Described objective table can prevent by the slip of object carrier on objective table, namely can be with on a certain definite position of being fixed in by object carrier on the objective table.Support column, the pin of described objective table have regulating action, can adjust the position that is placed on object on the objective table by it.Further, the plunger on the described objective table is by to certain pressure is provided by object carrier, makes can be close to pin on the described objective table by the edge of object carrier, can prevent by the slip of object carrier.
Objective table provided by the invention, have the following advantages: the support zone of each strong point is curved-surface structure, when it supports the object that other has the face structure, can make and contact for point between bracing frame and the object or line contacts, can fully locate owing to support, 3 of meeting geometric allocate the face rule, and this kind design can be determined object in one plane; In addition, when the object that supports when needs is regular planar structure, take three strong points can be with the object that supports on the plane of some needs, and because the position of three strong points constitutes a triangle, be easy to realize center of gravity control with object in delta-shaped region inside, thereby make supported object be not easy to turn on one's side.In addition, the bracing frame that has supplemental support point provided by the present invention has higher smoothness, three hard spots support the tram of having determined supported object, one soft spots supplemental support has guaranteed that supported object is difficult for turning on one's side, and pin is fixed table top, is difficult for mobile.
Objective table provided by the invention, adopt simple Machine Design, the energy realization is comprehensive to position supported object, it can accurately be fixed on supported object on a certain position, operation at some instruments, particularly in the measuring process of some precision instrument, reduce the position difference of measured object to the influence of final actual result.
In the operating process of precision instrument, with it as objective table, cooperate high operating system closely can finish the higher relatively operation of required precision, particularly when the instrument that relates to accurate measurement uses, objective table of the present invention has enough smoothnesses, the plan-position favorable reproducibility that object is placed on the operating desk is not easy to turn on one's side, and is conducive to accurate operation.
The present invention can realize the particularly accurate placement of the object of ordered structure of object, object for the same type of pattern rule, smooth tabular in edge for example, can guarantee that each placement all has very high position repeatability, namely can realize one-time positioning, repeatedly operation, can also realize comprehensive supported object being positioned, it can accurately be fixed on supported object on a certain position, has obtained better technical effect.
Description of drawings
Fig. 1 is the objective table structural representation in the embodiment of the invention 1.
Fig. 2 is the piston structure schematic diagram in the embodiment of the invention 1.
Fig. 3 is the structural representation after the objective table loading in the embodiment of the invention 1.
Among Fig. 1,11 is that support column, 12 is pin; 13 is plunger; 14 is base station.
Among Fig. 2,21 is circular bulb; 22 is pedestal.
Among Fig. 3,11 is that support column, 12 is pin; 13 is plunger; 14 is base station; 31 is contained object.
The invention will be further elaborated below by representational specific embodiment, is not limited only to present embodiment, also belongs to protection scope of the present invention by simple transformation or equivalent application.
The specific embodiment
[embodiment 1]
A kind of objective table of accurate control position, as shown in Figure 1, it comprises the base station 14 of support column 11, pin 12, plunger 13 and fixed support post 11, pin 12, plunger 13.The support column 11 of described objective table has the function of highly regulating, and can adjust the levelness that is placed on object on the objective table by it.Pin 12 is cam pin, can carry out certain adjustment in the position to object on horizontal plane by its rotation.
Figure 2 shows that the structural representation of base station upper plug in the present embodiment, it constitutes the outside by circular bulb 21 and pedestal 22, and circular bulb is by base interior spring jack-up.Fig. 3 is the loading schematic diagram of objective table, and objective table is provided certain pressure by 13 pairs of plungers by object carrier 31, makes can be close to pin on the described objective table by the edge of object carrier, can prevent by the slip of object carrier.
Objective table contains 2 plungers, and itself and described pin constitute by the marginal branch support point of object carrier, and relative with the position of described pin.Use described objective table can prevent by the off normal of object carrier on objective table, namely can be with on a certain definite position of being fixed in by object carrier on the objective table.
[embodiment 2]
A kind of objective table of accurate control position, it comprises objective table and 3 controls by the pin of object carrier position, described pin has regulating action, and can accurately be positioned the effect of a certain definite position on the plane by the object that carries.Described pin with regulating action is eccentric pin, it is made of two cylinders of out-of-alignment, two peripheries have helicitic texture, eccentric pin is fixed on the objective table by this structure, be used for stop nut the pin of adjusting is fixed on objective table, have governor motion at pin in addition, governor motion is a circular port in the present embodiment, inserts the action that wherein can rotate and regulate by the bar shaped rod.
Have 3 hard spot support columns on the objective table in the present embodiment, it can will be fixed on a certain plane adjustable height of hard spot support column by three strong points by object carrier.When using this objective table, the object that will be carried is placed on the objective table by support column jack-up, regulates the height of support column, makes object be positioned on certain horizontal plane; Mobile object makes object edge be close to 3 cam pins, regulate cam pin, in the process of rotating cam pin, make object edge be close to cam pin, because the rotation of cam pin, had certain variation in the position in the plane by object carrier,, get final product eccentric pin is fixing by nut until correct position at 3 cam pins of fit adjustment.In the present embodiment, cam pin 12 is higher than support column 13 projecting heights on the described objective table 11 at the projecting height on the objective table.
Objective table contains 3 plungers, and itself and described pin constitute by the marginal branch support point of object carrier, and relative with the position of described pin.Use described objective table can prevent by the off normal of object carrier on objective table, namely can be with on a certain definite position of being fixed in by object carrier on the objective table.
[embodiment 3]
A kind of objective table of accurate control position is used for placing the object that pattern is regular and position accuracy demand is high, and bracing frame comprises the base station of support column, pin and fixed support post and pin.Described support column is not point-blank rigid support posts of 3 positions, it is prepared by stainless steel material, and support column and base station position contacting have can the rotational support post helicitic texture, namely can regulate the height of each support column strong point by helicitic texture.3 support columns can be fixed in supported table top on a certain plane.3 eccentric pins are fixedly arranged on the base station in the present embodiment, and it is made by hard wear-resistant material, and the position of pin is in support column and constitutes leg-of-mutton periphery, and not point-blank, its fixed position is decided by the supporting object shape and size of objective table correspondence.Pin is higher than the projecting height on base station of described support column at the projecting height on the base station.Objective table is in the process of using, and all pins are tactile with the side edge of supported object, and it can be fixed in supported object a certain definite position on the plane.
[embodiment 4]
A kind of objective table of accurate control position is provided, increased by a soft spots support column on the basis of embodiment 1, other parts are identical with embodiment 1, in the use of bracing frame, it plays and prevents that the object center of gravity from deflecting away from the delta-shaped region that support column shown in the embodiment 1 constitutes and the phenomenon of turning on one's side, and the soft spots support column is spring-loaded plunger.
[embodiment 5]
A kind of objective table of accurate control position, it comprises the base station of three hard spot support columns, soft spots support column and fixed support post, 3 eccentric pins, circular hole on the eccentric pin.Three hard spot support columns are distributed on the different position of base station, and its position loca has constituted a right angled triangle, and the soft spots support column is in described leg-of-mutton perimeter, and four support column positions constitute a rectangular configuration.
Three hard spot support columns are made by the hard, wear-resistant stainless steel material, and it is embedded in support column column main body one end by the support end sphere structure and constitutes, and the support column column main body other end is helicitic texture, and a nut is fixed on the support column column main body by screw thread.The support end sphere structure is designed to sphere structure, is that three support columns can be determined a plane because sphere is generally a contact when contacting with other face; The design nut structure is easily loosening in order to prevent that support column is fixed on the base station.
The soft spots support column is a bulb resilient plunger, and bulb resilient plunger top is divided into hollow-core construction, and a spring is arranged in the hollow area, and there is a movable spheroid its upper end with spring is contacted, and spheroid and spring are fixed in the certain space by bulb resilient plunger agent structure; In the lower part of bulb resilient plunger agent structure helicitic texture is arranged in addition, by rotating bulb resilient plunger agent structure, the soft spots support column that can make has certain movement in the direction perpendicular to base station.When using the soft spots support column, adjust its height, make the movable spheroid in top of soft spots support column touch supported body surface and spring has elastic deformation a little to get final product.
Support column is to be fixed in the screw corresponding with support column on the base station by the mode that screw thread screws, there are a plurality of standby screws at base station, in order to can change the position of support column at any time according to the pattern of supported objects, thereby make bracing frame adapt to the support of different size object.The base station of fixed support post is made by the hard and light aluminum of matter.
The position of pin is in the hard spot support column and constitutes leg-of-mutton periphery, and not point-blank, its fixed position is decided by the supporting object shape and size of objective table correspondence.Pin is higher than the projecting height on base station of hard spot support column at the projecting height on the base station.Objective table is in the process of using, and all pins are tactile with the side edge of supported object, and it can be fixed in supported object a certain definite position on the plane.
Objective table contains 2 plungers, and itself and pin constitute by the marginal branch support point of object carrier, and relative with the position of two pins wherein.Use described objective table can prevent by the off normal of object carrier on objective table, namely can be with on a certain definite position of being fixed in by object carrier on the objective table.
[embodiment 6]
Present embodiment is a kind of objective table of accurate control position, and its structure is identical with embodiment 5, and three support columns are distributed near the edge of base station; And its material is the hard, wear-resistant stainless steel material and makes, and support column screws mode by screw thread and is fixed on the hard base station, and the hard base station is made by the lightweight aluminium material; Three support column position locas constitute leg-of-mutton three summits, and the triangle that constitutes is right angled triangle.The structure of soft spots support column is made by having certain flexible rubber material.
[embodiment 7]
Support column is identical with embodiment 5 with base station in the present embodiment, has a plurality of standby screws at base station.Change the position of three hard strong points as different from Example 5, the triangle that its loca is formed is equilateral triangle.Have nut structure and helicitic texture on the hard spot support column, have the screwed hole corresponding with helicitic texture at base station, support column is to be fixed in the screw corresponding with support column on the base station by the mode that screw thread screws, and screwing nut then is that support column and base station are combined closely.The base station of fixed support post is made by the hard and light aluminum of matter.
[embodiment 8]
A kind of objective table of accurate control position, support column is identical with embodiment 1 with base station, and its material is the hard, wear-resistant stainless steel material and makes, and the hard base station is made by the lightweight aluminium material; Three hard support column position locas constitute leg-of-mutton three summits, and the triangle that constitutes is non-isosceles acute triangle.The spherical structure of table top and bracing frame forms point and contacts, this objective table good stability, and the plan-position favorable reproducibility that object is placed on the objective table is not easy to turn on one's side.
[embodiment 9]
A kind of objective table of accurate control position, support column is identical with embodiment 5 with the position relation of base station, and this support column constitutes by ellipsoidal structure and cylindrical structure, and oval curved-surface structure is support zone.And its material is the hard, wear-resistant stainless steel material and makes, and support column is fixed on the hard base station by engage thread, and the hard base station is made by the lightweight aluminium material., the oval curved-surface structure of table top and bracing frame forms line and contacts this objective table stability height.
[embodiment 10]
A kind of objective table of accurate control position comprises the base station of three hard support columns and soft support column and fixed support post, and three hard support columns are distributed near the edge of base station; This hard support column arrangement constitutes by ellipsoidal structure and cylindrical structure, oval curved-surface structure is support zone, and its material is the hard, wear-resistant stainless steel material and makes, support column has the identical helicitic texture of embodiment 5, have the screwed hole corresponding with helicitic texture at base station, support column is tightened on base station by helicitic texture.The hard base station is made by the lightweight aluminium material; Three support column position locas constitute leg-of-mutton three summits, and the triangle that constitutes is isosceles acute triangle.The position of pin is in the hard spot support column and constitutes leg-of-mutton periphery, and not point-blank, its fixed position is decided by the supporting object shape and size of objective table correspondence.Pin is higher than the projecting height on base station of hard spot support column at the projecting height on the base station.Objective table is in the process of using, and all pins are tactile with the side edge of supported object, and it can be fixed in supported object a certain definite position on the plane.
[embodiment 11]
A kind of objective table that has the accurate control position of supplemental support point, three hard spot support columns constitute by pyramidal structure and cylindrical structure, and pyramidal structure is support zone.Other parts are identical with embodiment 5, and its material is the hard, wear-resistant stainless steel material and makes, support column has the identical helicitic texture of embodiment 4, has the screwed hole corresponding with helicitic texture at base station, and support column is tightened on base station by helicitic texture.The hard base station is made by the lightweight aluminium material; Three support column position locas constitute leg-of-mutton three summits, and the triangle that constitutes is isosceles acute triangle.The awl point structure of table top and bracing frame forms point and contacts this objective table stability height.
Claims (9)
1. the objective table of an accurate control position, comprise base station, support column, plunger and pin, support column, plunger and pin are fixed on the base station, perpendicular to the height of pin and plunger on the direction of the base station height greater than support column, the summit of the support zone of described support column forms a plane, contained object is positioned on the support zone of support column, and its edge contacts with pin, plunger; At least one plunger is positioned at the relative position of pin.
2. the objective table of accurate control position according to claim 1, the support zone that it is characterized in that described support column is curved-surface structure or pyramidal structure; Described support column is hard spot support column and soft spots support column, and described objective table has at least 2 pins, at least 2 plungers; Support column, plunger and pin are fixed on the base station by screw thread.
3. the objective table of accurate control position according to claim 2, the support zone curved-surface structure that it is characterized in that described support column is spherical structure; Support column has 3 hard spot support columns and a plurality of soft spots support column to constitute; Three hard spot support columns are distributed in base station position loca and constitute a triangle, and soft spots support column loca is in described leg-of-mutton outside; 3 pins are arranged on the base station, have nut on the pin.
4. the objective table of accurate control position according to claim 3 is characterized in that three hard spot support column position loca line form right angles or acute triangle; Threads turn is passed through at the position that the soft spots support column contacts with base station.
5. the objective table of accurate control position according to claim 4 is characterized in that three support column position loca lines constitute isosceles right angle or isosceles acute triangle; Described hard spot support column is made by the abrasion-proof stainless steel material; The soft spots support column is combined by hard material and flexible material and forms; Standby screw is arranged on the base station, have nut on the hard spot support column, the soft spots support column is the bulb resilient plunger, and the support zone of described support column contacts or the line contact for point with the way of contact of table top.
6. the objective table of accurate control position according to claim 1 is characterized in that described base station made by lightweight aluminium material or alloy material; The support zone of described support column is that point contacts with the way of contact of table top.
7. the objective table of accurate control position according to claim 1, it is characterized in that described pin is eccentric pin, the main body of its eccentric shaft is cylindrical structure, and the stiff end that is fixed on the base station has screw thread, during the rotating eccentricity pin, its vertical central is laterally mobile; Plunger is made up of circular bulb and pedestal.
8. the objective table of accurate control position according to claim 7 is characterized in that having the manual adjustments parts on the eccentric pin; The strong point of plunger is spherical structure, is fixed on the pedestal by screw.
9. the objective table of accurate control position according to claim 8 is characterized in that the manual adjustments parts are projection, groove or circular hole; Plunger is spring-loaded plunger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006855.6A CN103203725B (en) | 2012-01-11 | 2012-01-11 | Accurately control the object stage of position |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210006855.6A CN103203725B (en) | 2012-01-11 | 2012-01-11 | Accurately control the object stage of position |
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| CN103203725A true CN103203725A (en) | 2013-07-17 |
| CN103203725B CN103203725B (en) | 2016-08-10 |
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| CN103921253A (en) * | 2014-04-16 | 2014-07-16 | 中国长江电力股份有限公司 | Dismounting support of pressure steel pipe manhole plugging door |
| CN107553429A (en) * | 2017-09-05 | 2018-01-09 | 武汉华星光电技术有限公司 | Positioning mechanism |
| CN108994783A (en) * | 2018-07-13 | 2018-12-14 | 东莞市瑞沧机械设备有限公司 | Electromagnetic stationary type automatic centering mobile platform |
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| CN103921253A (en) * | 2014-04-16 | 2014-07-16 | 中国长江电力股份有限公司 | Dismounting support of pressure steel pipe manhole plugging door |
| CN103921253B (en) * | 2014-04-16 | 2016-06-29 | 中国长江电力股份有限公司 | Penstock enters manhole closure gate dismounting support |
| CN107553429A (en) * | 2017-09-05 | 2018-01-09 | 武汉华星光电技术有限公司 | Positioning mechanism |
| CN108994783A (en) * | 2018-07-13 | 2018-12-14 | 东莞市瑞沧机械设备有限公司 | Electromagnetic stationary type automatic centering mobile platform |
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